quiz-solution4

# quiz-solution4 - 650:460 Aerodynamics Quiz No. 4 - Solution...

This preview shows pages 1–3. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 650:460 Aerodynamics Quiz No. 4 - Solution Prof. Doyle Knight Tel: 732 445 4464, Email: [email protected] Oﬃce hours: Tues and Thur, 4:30 pm - 6:00 pm and by appointment Fall 2009 1 Quiz No. 4 A two-dimensional airfoil has a camber line deﬁned by z x =ε c c 1− x c for 0 ≤ x ≤ c where ε = 0.1 is a dimensionless constant. Find the value of cmac . See lecture notes for deﬁnite integrals. Solution The slope of the camber line is d (z /c ) d (x /c ) = ε 1−2 = ε cos θ x c 2 Quiz No. 4 The coeﬃcients in the Fourier series for the vorticity are 2 π dz A1 = cos θ d θ π o dx 2π ε cos2 θ d θ = πo =ε 2 π dz cos 2θ d θ A2 = π o dx =0 using π cos mθ cos nθ d θ = o π 2 if m = n and zero otherwise Thus cmac = π π (A2 − A1 ) = − ε 4 4 3 ...
View Full Document

## This note was uploaded on 12/15/2009 for the course 650 460 taught by Professor Knight during the Spring '09 term at Rutgers.

### Page1 / 3

quiz-solution4 - 650:460 Aerodynamics Quiz No. 4 - Solution...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online